Fingerprint template updating method and device

Abstract

A fingerprint template updating method and device is provided. The fingerprint template updating method includes: in response to an acquired current fingerprint matching one of at least one fingerprint template, determining whether to update the at least one fingerprint template using the current fingerprint based on a matching status of a first number of fingerprints acquired prior to the current fingerprint and/or a second number of fingerprints acquired after the current fingerprint.

What is claimed is: 
     
         1 . A fingerprint template updating method, comprising:
 in response to an acquired current fingerprint matching one of at least one fingerprint template, determining whether to update the at least one fingerprint template using the acquired current fingerprint based on a matching status of a first number of fingerprints acquired prior to the acquired current fingerprint and/or a second number of fingerprints acquired after the acquired current fingerprint.   
     
     
         2 . The fingerprint template updating method of  claim 1 , wherein the determining of whether to update the at least one fingerprint template using the acquired current fingerprint comprises:
 determining to update the at least one fingerprint template using the acquired current fingerprint, in response to a matching success rate of the first number of fingerprints acquired prior to the acquired current fingerprint and/or the second number of fingerprints acquired after the acquired current fingerprint being not less than a first value.   
     
     
         3 . The fingerprint template updating method of  claim 2 , wherein the determining of updating the at least one fingerprint template using the acquired current fingerprint comprises:
 determining whether a matching success rate of the first number of fingerprints is not less than the first value;   storing the acquired current fingerprint in a buffer storage unit, in response to the matching success rate of the first number of fingerprints not being less than the first value;   determining whether a matching success rate of the second number of fingerprints is not less than the first value after the matching of the second number of fingerprints is completed; and   determining to update the at least one fingerprint template using the acquired current fingerprint in response to the matching success rate of the second number of fingerprints not being less than the first value.   
     
     
         4 . The fingerprint template updating method of  claim 2 , wherein the determining of updating the at least one fingerprint template using the acquired current fingerprint comprises:
 in response to a similarity of the acquired current fingerprint to the one of the at least one fingerprint template at a time of matching being not less than a second value, updating the one fingerprint template using the acquired current fingerprint; and   in response to the similarity of the acquired current fingerprint to the one of the at least one fingerprint template at the time of matching being less than the second value, updating a fingerprint template with a least number of successful matches among the at least one fingerprint template using the acquired current fingerprint.   
     
     
         5 . The fingerprint template updating method of  claim 4 , wherein the updating of the fingerprint template with the least number of successful matches among the at least one fingerprint template using the acquired current fingerprint comprises:
 in response to the fingerprint template with the least number of successful matches being a preset protected template, updating another fingerprint template with a least number of successful matches, except for the preset protected template, using the acquired current fingerprint, among the at least one fingerprint template.   
     
     
         6 . The fingerprint template updating method of  claim 1 , wherein the at least one fingerprint template updating is stopped in response to a fingerprint matching success rate being less than a third value and/or a number of times of fingerprint matching within a time period being not less than a fourth value. 
     
     
         7 . A fingerprint template updating device, comprising:
 processing circuitry configured to, in response to an acquired current fingerprint matching one of at least one fingerprint template, determine whether to update the at least one fingerprint template using the acquired current fingerprint based on a matching status of a first number of fingerprints acquired prior to the acquired current fingerprint and/or a second number of fingerprints acquired after the acquired current fingerprint.   
     
     
         8 . The fingerprint template updating device of  claim 7 , wherein the processing circuitry is further configured to:
 determine whether to update the at least one fingerprint template using the acquired current fingerprint in response to a matching success rate of the first number of fingerprints acquired prior to the acquired current fingerprint and/or the second number of fingerprints acquired after the acquired current fingerprint being not less than a first value.   
     
     
         9 . The fingerprint template updating device of  claim 8 , further comprising:
 a buffer storage unit,   wherein the processing circuitry is further configured to:   determine whether a matching success rate of the first number of fingerprints is not less than the first value;   store the acquired current fingerprint in the buffer storage unit, in response to the matching success rate of the first number of fingerprints not being less than the first value;   determine whether a matching success rate of the second number of fingerprints is not less than the first value after the matching of the second number of fingerprints is completed; and   determine to update the at least one fingerprint template using the acquired current fingerprint in response to the matching success rate of the second number of fingerprints not being less than the first value.   
     
     
         10 . The fingerprint template updating device of  claim 8 , wherein the processing circuitry is further configured to:
 in response to a similarity of the acquired current fingerprint to the one of the at least one fingerprint template at a time of matching being not less than a second value, update the one fingerprint template using the acquired current fingerprint; and   in response to the similarity of the acquired current fingerprint to the one of the at least one fingerprint template at the time of matching being less than the second value, update a fingerprint template with a least number of successful matches among the at least one fingerprint template using the acquired current fingerprint.   
     
     
         11 . The fingerprint template updating device of  claim 10 , wherein the processing circuitry is further configured to:
 in response to the fingerprint template with the least number of successful matches being a preset protected template, update another fingerprint template with a least number of successful matches, except for the preset protected template using the acquired current fingerprint, among the at least one fingerprint template.   
     
     
         12 . The fingerprint template updating device of  claim 7 , wherein the processing circuitry is further configured to:
 stop the at least one fingerprint template updating in response to a fingerprint matching success rate being less than a third value and/or a number of times of fingerprint matching within a time period being not less than a fourth value.   
     
     
         13 . An electronic device comprising a memory having computer-executable instructions stored thereon and a processor, the instructions, when executed by the processor, cause the electronic device to perform the method of  claim 1 . 
     
     
         14 . A computer readable medium having computer-executable instructions stored thereon, the instructions, when executed cause an electronic device to perform the method of  claim 1 .